Sample topic sentence: Traditions help unite people because they make people feel part of something larger than themselves. Based on the topic sentence, which detail would help develop the idea? When you participate in a tradition, you get to feel like you are part of a group; therefore, you feel united with others. Traditions help make our lives more interesting because we know when they will happen, and we get to look forward to them. Thousands of people turned out this year for the annual Celebrate Japan Day, and they all got to share and experience Japanese culture.